/*
 * Copyright (c) 2016-2017, fastquery.org and/or its affiliates. All rights reserved.
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * For more information, please see http://www.fastquery.org/.
 * 
 */

package org.fastquery.web;

import java.util.Enumeration;

import javax.servlet.ServletContext;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import org.fastquery.util.FastQueryJSONObject;

/**
 * 
 * @author xixifeng (fastquery@126.com)
 */
public class FQuery implements ServletContextListener {
	
	FqClassLoader classLoader;
	
	@Override
	public void contextInitialized(ServletContextEvent sce) {
		classLoader = new FqClassLoader(sce.getServletContext());
		new GenerateRepositoryImpl(classLoader).persistent();
	}

	@Override
	public void contextDestroyed(ServletContextEvent sce) {
		ServletContext context = sce.getServletContext();
		Enumeration<String> enumeration = context.getAttributeNames();
		while (enumeration.hasMoreElements()) {
			String key = enumeration.nextElement();
			context.removeAttribute(key);
		}
		classLoader = null;
		FastQueryJSONObject.removeCurrent();
	}
}
